170 lines
5.0 KiB
Groff
170 lines
5.0 KiB
Groff
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.\" ========================================================================
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.\"
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.IX Title "EVP_SHA1 3"
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.TH EVP_SHA1 3 "2020-03-02" "3.0.0-dev" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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EVP_sha1
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\&\- SHA\-1 For EVP
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/evp.h>
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\&
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\& const EVP_MD *EVP_sha1(void);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\s-1SHA\-1\s0 (Secure Hash Algorithm 1) is a cryptographic hash function standardized
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in \s-1NIST\s0 \s-1FIPS\s0 180\-4. The algorithm was designed by the United States National
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Security Agency and initially published in 1995.
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.IP "\fIEVP_sha1()\fR" 4
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.IX Item "EVP_sha1()"
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The \s-1SHA\-1\s0 algorithm which produces a 160\-bit output from a given input.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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These functions return a \fB\s-1EVP_MD\s0\fR structure that contains the
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implementation of the symmetric cipher. See \fIEVP_MD_meth_new\fR\|(3) for
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details of the \fB\s-1EVP_MD\s0\fR structure.
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.SH "CONFORMING TO"
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.IX Header "CONFORMING TO"
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\&\s-1NIST\s0 \s-1FIPS\s0 180\-4.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIevp\fR\|(7),
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\&\fIEVP_DigestInit\fR\|(3)
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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